axios.get("http://localhost:8888/stu/selectStudent")
        .then(function(res){
            var stuData = res.data.stuData[0];
            document.getElementById("info").innerText = stuData.gradeId + "年级的" + stuData.stuSex + "生有学生" + stuData.rs + "个！";
        })
        .catch(function(err){
            console.log(err)
        })